Olefins in gasoline
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In the FCC oil processed by our plant’s gasoline hydrogenation unit, the olefin content is 50 percent, while the sulfur content is around 450. As a result, the olefin and sulfur levels in the resulting gasoline exceed the specified limits. Measures such as reducing the feed volume and increasing the temperature have not yielded significant results, and increasing the hydrogen-to-oil ratio also did not help. Please share your suggestions, experienced colleagues! Additionally, in the SHU reactor of a gasoline hydrogenation unit, does polymerization occur if the olefin content is high? If so, will element S be involved?
There are now many options available for treating pyrolysis gasoline, such as selective hydrogenation, which removes sulfur while minimizing losses in octane rating; S-Zorb is also a method for selective desulfurization with almost no impact on the octane rating.
Is it possible for polymerization of olefins to occur in a selective hydrogenation reactor?
Can the circulation rate be increased, or can the olefin content be reduced in advance? For polymerization, the temperature is key – you need to consider the carbon number as well as the specific components involved